Window



May 36, 1950 A. B. EDWARDS, JR

WINDOW Filed April 2, 1946 2 Sheets-Sheet l l r 0 7 E 3; M 7%. a i 5 In 5 fa. F Y F B A ATTORNEYS May 30, 1950 A. B. EDWARDS, JR

WINDOW 2 Sheets-Sheet 2 Filed April 2, 1946 ATTORNEYS l atentec l May 30, 1950 2,509,678 WINDOW AlffdBPEdwards? J r., Piandnme; Ni- Yi" Application April-=2, 1946 seriairNo; 659,0?79

lfifllailnsk (Cl. 160 -90)? Thiswinven-tion relates atowwinqows and is pan ticular-ly applicable ta combination orstormpwinr. doWs r of a the: type having", interehangeablm glass and'sereen panels for year roundruses It has-beenproposedheretoforettoeprovide Win-w dow assemblies comprising a. .frame for "mounting the- Winds-Win a building: aperture the frame bee ingzarranged -to receive-glazeci and screened panels .t interchangeably aecordina to the season. The} storageoft thepanehnotinause however eonsti-l 30 tutes a considerable inconvenience, sin cettwiean yeam the panel in -use must-be removed transporteduto a different-pant of the-building andeth'et, replacement panelc-broughttback .from storage foin. installation in th window. Provisioniot storage 7 spa eeafort the panelsnot in J-use often. presents a seriousproblem,partieu:1ar1y in apartmenttbnild. ingsWW-here-space is atra {premiums Tfiempanels-i accumulate dustbin storage andQgerirallj require cleaning'before eaeh installationo Furthermore, it has been usual to provide; panels. which can -onlyberinstalled oraremovedlfrom the outside ofY-thebuilding so that special'equipment.

anebtheservicesvof. a. skilled workman-are-required 3 toehange the-panels-twiee eaehyearw Forwentilation; glazed panels employedddfiringm themrinter arelusual lyr arrangedto swing outwardll r0m-a building and: to ,be f astened inthishposi-s tion duringswarmer.periodstforventilation... 'IHi arrangement of :the storm windows on a .buildifigt presentsan, unsightly appearance, andralso one- 7 ates a serious thazardfl in..that lsuddn gustslofi wind are likely .to .catehfth'e panels andftean .th'em V from their supports ItL-is an object of -thist-in'vention tosprovidaa wihddwassembly of .siinple and-durable.constiuce tion having .a frame f on mounting the WiHdOW a building aperture Wherei-n ttheuscreenedfandll glazed-panels canwbe interchangeably installed a portion of the frame from. t the inside of the 4O builai'ngr A further object is to provide a window whereinw the-paneltnot in use can be conveniently stoned inMtheframe itself so that the inconvenience of providing storage space for:: such 'panels' g anci:-.}..

transporting panels. to andfromw storage avoided,

Another object is toprovide a-windowwhich, can bezopened inwardly for: ventilating; punposes instead-oi outward from thebuildingt it Thesar objects are accomplished in-raeoordanoetwith any invention -b eonstruoting a window-with a frame: adapted-to :receiveupper-and dowenglazed 1 pane1s-- in-- edge abutting relation, t supported against th insideqoi: an abutment on "thevoutea,

side ofthe .frame; thexlowen panel;.beingpivotallyt mounted-"sores to swingsinward about itssuppem edge when dt" istrdesi-ned z-to openatheawindewtmm ventilation. Th efnama is constructednsoz'asetoe provide storage spaeedor: aethird 2pane1;t,inter-: changeable-{with the: lower a rpanelt mounte (11* f 0121 usea SOmthalt the thirdt-ipanel-acanqbe m0unted: .-in-J therupper rp art tofu then-frame inside-10f the upper; panel-1 Another 1 feature: of i-thej rinventionsis therrpro vision soiwsimpleimounting means {for removabm securingpthe-epanelssinwthe desired-rrelation, and: F for storage in the frame; and the provisiomoft simple:1atch:+meanssfomho1dingi ther-fiowerz panel inopenposi-tionwfonwentilatiom;

Othen-obj eets fiandr advantages 0f athe invention: will: appear-t from :the: 1f eliowing desoription :-:Of an prefernedwmbodiment ofiemyinrention; taken-,withm theeaeeompanyingairawings;whereim'.

Figure 1 is a front elevation of a iStO-ZmwWi'HdQWW mascot-dance with mm: inventione.vieweehfrom a a Eig Z is: aabr-okenusidenelevation ofa-theastormq; WiIIdOW'Of Fig-a1, partlazsectioned arm with-:partsa cut "away; tosshowm-the underl-ying struetune gand: a sereenedrpanel stoned thereime.

Fig. 3 issan enlarged; detaiL in :amend: elevations of thefljunotionr ofa -the. uppersa-nd lower-panelsr-t whenrmounted-inethe storm window. o

Figs 4 istan enlasgedrdetailsofwmeansfion-secuim ingstheaupper and lowempanels-tin etheefrramen Eigav 5 is .a zdeta-iluofi a bolt-(or PmtIBQfOIPSGCHIRiHQfl the JQ erpaneL in theframen Fig-4, fisise aM detnaihr in fnontelevation.tlofaaxlatel'm ,memberfon holdinaatheelowempaneiiii-open posisv prisesu a=1framem n zadaptedizrtosbe mounted ail imam building .capertur .ewggeomthezoutside 0f: arperw manent "Window instaliemthereimmcomprisina a 5: top? transverse member i -l, verticaltasideemzemberse I 2;aancl; as lower#transversen-memben l-3 seemedm limwtogethertat thBWCQI'HGS'iSri'tO providen awrigidwstruew-- turar-t The top, memben i; wise-provided with=-aa flange-A 4' extending inwara-ifnomzthepntside edge; thereof andmthe side umembers IZ-tape provided withtan inwardlyaextendingfiange. Limcontin t-atientof the fiangesl 4 providing an .abtitment-atp the outer edge of the frame for supporting panels to be installed therein. The lower transverse member I3, is constructed to have a raised ledge I6, adjacent the outside of the frame for engag-, ing the lower edge of a panel installed in the window, and a lower ledge I1 on the inside of the frame. The upper portions of th side members I2 are also provided with an inwardly extending flange I8 at the inner edge of the frame forming an inner abutment, extending downward partway from the top of the frame, terminating at Iila preferably above thte middle of the frame so as to permit insertion of panels from the inner side of the frame.

An upper glazed panel I9, comprising a frame 28 and a glass pane 2I mounted therein, is constructed to fit the upper half of the frame I0.

25 is provided in a side member I2 to receive the end of the throw-bolt 22 when the panel I9 is positioned in the upper part of the frame I9 against flanges I4 and I5 on the outside of the frame. The upper portion of the panel I9 is held against flanges I4 and I5 by a pair of springs 26 mounted on the inner surfaces of side members I2 of the frame, for example, by means of a yoke 26'.

The upper panel I9 is installed in the frame by sliding it upward between flanges I5 and springs 26 with bolt 22 in retracted position, and after the panel is properly positioned, projecting the bolt 22 into the aperture 25. If desired the bolt can be secured in projected position by tight ening screws 23.

A lower panel 21 for winter use, comprising a frame 28 and a glass pane 29 mounted therein, is constructed for mounting in the frame I against the flanges I with its upper edge in abutting relation with the lower edge of upper panel I9, and its lower edge contacting the raised ledge I6 of the lower transverse member l3 of the frame I0. Means are provided for removably mounting the lower panel in the frame in such a manner that it is adapted to pivot about a horizontal axis adjacent its upper edge, swinging inward from the frame for ventilation. Such mounting means comprises, for example, a pair of pintles 30 at each end of the top of the panel frame 28, each having a laterally projecting thumb piece 3| intermediate the ends thereof, and a spring-centering shoulder 32 at the inner end thereof. The pintles 36 are slidably housed in sockets 33 in the upper rail of the panel frame 28 with thumb pieces 3I projecting through slots 34 in the inner surface of the frame 28, so as to limit movement of the pintles between projected and retracted positions at the sides of the panel. The edges of the slots 34 are preferably provided with a pair of notches 35 and 35a at opposite ends of the slots, for receiving the thumb pieces 3|, so as to latch the pintles 30 in projected or retracted position. A compression spring 36 in the interior of the socket 33 bears against the shoulder 32 urging the pintle toward projected position. A pair of apertures 31 are provided in the side I2 of the frame It] for receiving the projecting pintles 30, when the lower panel 21 is mounted in the frame against flanges I5, abutting the lower edge of upper panel I9, and resting on ledge I6 of the lower transverse member I3 of the frame.

In order to permit inward pivoting movement of panel 21 about the axis of pintles 36, while at the same time permitting the panel to remain in surface contact at its upper edge with the lower edge of upper panel I9, the contacting surfaces of the two panels are formed with complementary cylindrical portions 38, concentric with pintles 30, preferably terminating in a plane portion 39 on the outside of the panels when both are positioned against the flanges I5. At the cylindrical contact surface portions 38, the lower panel is preferably convex while the upper panel is concave.

The lower panel 21 is installed in the frame with pintles 38 latched in retracted position, as by engaging the thumb pieces 3I with the inner notches 35 of slots 34, and the panel is inserted in the frame from the inside, with its cylindrical upper edge surface abutting the corresponding surface on the lower edge of the upper panel. When its lower edge rests upon the ledge I6 of the lower member I3 of the frame, the pintles 36 are released for projection into the apertures 31 in the frame by moving the thumb pieces 3| out of the inner notches 35, whereupon the springs 36 project the pintles into the apertures and the pintles 30 can be locked in projected position by moving the thumb pieces 3| downward into the outer notches 35a.

It will be seen that the panel 21 can swing inward from the frame about the pintles 30, While maintaining surface contact at the cylindrical surface 38 with the upper panel I9. In order to hold the panel 21 closed, a pair of keepers 46 are pivotally secured at M to the vertical inner side 42 of ledge I6, and can be moved upward about their pivots so that they project across the inner surface of the frame 28 to hold panel 21 against flanges I5.

In accordance with the invention, means for latching the lower panel 21 in various open positions for ventilation comprises a latch member 43, formed for example of metal rod, having a handle 44, and a pair of parallel arms 45 and 46, the ends of which are bent inwardly at right angles to form an inner cross bar 41 and an outer cross bar 48, spaced one from the other, so as to enclose an area open at one side of the latch member. The latch member 43 is fastened to the inside of the bottom rail of the frame 28 of the lower panel 21 by means of a yoke 49, which can be stamped from a piece of sheet metal, including a pair'of vertical guides 56 for engaging arms 45 and 46, and a raised portion 5| for receiving the cross bars 41 and 48 within the limits of the frame 28 upon moving the latch member 43 upward thereon. Upward movement of the latch member 43 in the guides 56 is lim: ited by an inward projection 52 between th guides.

When it is desired to use the latch member, the parallel arms 45 and 46 slide downward through the guides 58 so that the cross bars 41 and 48 are below the edge of the window, the handle 44 limiting downward movement of the latch member upon reaching the top of yoke 49.

A latch bar 53, having on its upper surface a series of notches '54 is constructed of a thickness corresponding to the spacing between the cross bars 41 and 48 of the latch member 43. The latch bar is mounted on the lower member I3 of the frame In for pivotal movement about one end thereof by means of a pin 55 projecting lata is'oegeeee 5 erally fromione endonths banthroughral'holetiiih in the =innerledge $.11 at the bottomimemben I336 anthe frame; the -holeand pin -having :suflicient: a; clearance to permit the latch ban 53' to the canted 1.

tioniplovi'dese:5aaconvenientiandrsimplerarraiigdmentfiwithrprovisionc'fornstoringiinterchangeablr screemand zglazedpanelsrwvhen not in usevinupper rporti'cinzzofrthemindow: Since themspaceer p r ash/e115- moved pivotally'ilin amhvrizonr-r: 5 between .the :upperi paneland the permanent tal planer w Ametaining member such as a rwashem: Ellissecured to the lowerend of thelpin andLaa compression spring inountedron theipin: bears? against the washer and the under surface Offbhflffl dowiinrthe cbuilding .aaperture 5 in: which thes-panelei used :i'ist'store'd: iswprotected from substantial cirai culationz'aofs Kain: there: is little tendency for *dustc to tiaccumulat'e onwtherstore'd 'panely so ithatiit 1-" ledge li bn the framedEnormallsfiretraicting the lm ordinariiw requires. very infrequent" cleanings Whentit isisde'sired to wash-lithesglazedarpanelsir their innersurfacezcambe readily reached bysre moving the stored-panel; andlowering theuppenf sash roftfthe permanent window; andzwhen ilFltiSii against casual displacement: bydhe force iofiitheele desired-i to washthe :enti-re'swindowfincludingithen spring 51.

When it is i desired to latchirithe lower panel: 21-? in open: position: for i ventilation: Ias shownaintl iga 8,= the panel is opened; pivriting:inward:about theepintles downward from the lower edge on thespanel'an'dii the latch bar 53 is moved into position between the=cross bars M and 48 of the latchmember-larm 43-and engaged. withone of the notches 54,?said outer surface thereof, the upperiand iloweripaniirels; are'cremovedrfso that'the 'panelswmay, be

broughtc into the rcbuiltlingw and ureadilylscleanedsi- Thecsunface abutment :1 provided at: cylindrical The latch: member- 43 is isprojectediigo surfaces 38 ofsrtheupper' and lower glazed panels-:

provides azzweathtemtight-seal; while at iithersameg time-permitting =pivota1 :mounting of "the lowem" panelin the framer- Variations and modifications-1 may be made-n cross bai's yielding resiliently to permit thedn! 5 within the "scope ofnthisdnventionirand portions?- sertionof the latch bar betweenithema Theilatch means thus provides a 1 convenient and simple 1. arrangement for holding the lower panel in openjo position for purposes of ventilation;

A screen panel 59 having-a rframe.BB:icovered goreceiving 'aniupper andslowei panel, latch means with screening 6! is constructedcso as-torbe insterchangeable with the lower: glazed panels'i'lr Thus, itincludes. a convex cylindrical portion 3811 at its upperedge for mountin tincan-iabut-n removably mountings: an upper panel in saidframecrlatchi means removably mounting anlower panel'rin said frame; and latch means removablyv mounting a l-lthird' panelofrrsimilar outline tosaid a ting relation with the correspondingconcave eye 35 lower panel-interchangeable withsaidlowerpanel-z" lindrical surface it 38 onmthe .lower edge'of the up-: i per panel l9. Since this screencdoesxnot pivot in"; position, it includes only asingle pintle 30arw'rthr thumb piece 3 la. mounted in ithenl'upperlrailziofu in'rtheiuppen part ofuth'e frame facing the upper: panelmounted in the frame.

2;':.An auxiliary *windowsuniii comprising-a frames; adapted ""to 'be *mounted inrawvindow openingzfdrr itsframe, in-the same manner Tas :the pintls 301 r ivin san uppei 'and lower :;panel; la'tchmeans 2 in thepanel 21to serve as awlatchai Thus,.-.thea screened H panel can be interchangeably mounted: inuthe lower portion of fram'e illl replacingazgthew glazed-panel 21..

Inaccordance with the invention; he ugzg ilar outline to said lowermanel interchangeable:

is-constructed..of suffici'entxdepthnto receive .fthee-r screen-panel 59 (or glazed panel 21) in: the upper portion of the frame, facing: the insiderof'aupper panel 19 so that either .of therinterchangeable removablyrnounting an? upper :paneh in the router 1' portion of saidf frame latch? means removabl'yz mountingra. lower panel: inxsai'd frame, and latchc means removably mounting althird panelbfasimce with said-'lowerl-panel' in the upper. portion of the frame-facing: the inside a of the upper panel; mountedinthe-frame;

3. Anauxili'ary window unit comprising a framerpa s' e s ed the: u pe part the eo adapte'd to be mounted ina windowopening fon frame, facing the insideof upper panel; 19,: while.- the other of the interchangeable i paznelseis =installed fonusein the frame Foniithisrpurpose z OIIBzOIKEt pan of holes 62 are provided-inthe side members ii of the-frame, lfl forsqreceiving pintle ttmga mm t yq upper panel; and-21:,-

3Ba (or 38) when :one. of the. lowerrpanelscisc placedin the upper portionr ofs the frame ininv verted position, resting against itherinnen:flangesm? I 8 of the-side members 1| 2, and it extendingiupwardv receiving an upper and lower i panel, 1 latch meansi removably'mounting an upper panel in the outer: portion of said frame; latch": means removablye mounting-a lower panel ir r said "frame in edg latch meansremovably mounting a thirdcpanel-u of similar outline to said lower panel inte1'-change-. r able a with said lower panel in the. upper portion:: or theufiiame inczinvertedvpositinn, facing the :ina:

toward the top of theirame. Aespringflfia ad-"wco side of 'the. p 1

vantageously carriedabysyoke :25 isazprovided at I: the sides ofuthe frame totholdz theistored panelxl against the flanges 18;

In: order to mount oneof theipanels, for exam-i 4. An auxiliary-windowunit comprising 'a frame adapted to: ice-mounted in-a window opening; am. upper panel I mounted in: the. upper portiorruofi: said frame; al-lower :panel :and a third: paneizina p l the-Screen p l 5 posi ionlforstoragecce oer-changeable therewith. formounting inc then after removal :from; the; frame; itheizp'an'el :is iiII-i vented, itslower edgebeing inserted..:betweenthe r upper panel l9 and lthe innerrfiangestlBron then sidenmembers l2 of therframer. It is then slid lowen aportion LQf said frame, mounting meansronxr said: lowerrpan'el iandon-zsaid third ?panel and: cooperating; means on said; frame. for removably 1 mountings: these i panels-,interchangeably in, they:

upward'rbetween said flanges andaaspringsaZBa;widower portion of the frame, and means on their until the pintle Eda registers a with s the wcorre"--- spending; hole -62 :in the sides of 'the :frame": l0; The pintle is then projected and the screen Tpaneh is conveniently stored :for; the winter season.)

frame:fon;.,cooperationr:withuthemcuntingrmeans on isaidulowen panelwandw third l panel {for mount; i

ingi; theses: panelseinterchangeablya 1115 the upper p rtiow theirameir inverted:pp t cni fa ines ltwillivbeiseen thattheawindoweofmy invene rs theimsideofitheruppenranch it a 5. An auxiliary window unit comprising a frame adapted to be mounted in a window opening, an upper panel for mounting in the upper part of said frame, a lower panel for mounting in the lower portion of said frame, a third panel interchangeable with said lower panel, pivot mounting means at the top of said lower panel and of said third panel and cooperating means on said frame for mounting these panels interchangea y in the frame, for pivotal movement about the top of the panels, and means on the frame for co operation with said mounting means on the lower panel and third panel for mounting these panels interchangeably in the upper portion of the frame, in inverted position facing the inside of the upper panel.

6. An auxiliary window unit comprising a panel-receiving frame adapted to be mounted in a window opening, an abutment at the outer edge of said frame, latch means securing an upper panel against the inside of said abutment in said frame, latch means removably securing a lower panel against said abutment in edge-abutting relation with the upper panel, and latch means releasably securing a third panel of similar outline to said lower panel in the upper portion of said frame facing the inside of said upper panel, said third panel being interchangeable with said lower panel.

7. An auxiliary window unit comprising a panel-receiving frame adapted to be mounted in a. window opening, an outer abutment at the outer edge of said frame, an inner abutment at the inside edge of the upper portion of said frame, means for securing an upper panel against the inside of the outer abutment, pivot means for removably releasably securing a lower panel against said outer abutment in edge-abutting relation with said upper panel and facilitating inward pivotal movement of the lower panel about the upper edge thereof, and means for releasably securing a third panel against said inner abutment in the upper portion of said frame facing the inside of said upper panel, said third panel being interchangeable with said lower panel.

8. An auxiliary window unit comprising a panel-receiving frame adapted to be mounted in a window opening, anouter abutment at the outside edge of said frame, an inner abutment at the inside edge of the upper portion of said frame, an upper panel mounted in the upper portion of said frame against the inside of said outer abutment, means for securing the lower end of said panel to said frame, resilient means carried by said frame for urging the upper part of said upper panel against said outer abutment, a lower panel mounted in said frame against said outer abutment in edge-abutting relation with said upper panel, releasable pivot means on said lower panel and cooperating means on the frame for securing the upper end of the lower panel to the frame and to facilitate inward swinging of said lower panel about its upper end away from said outer abutment, a third panel interchangeable with said lower panel and having means for holding the latter in inverted position in the upper portion of the frame against said inner abutment, and resilient means mounted on frame for urging said third panel against said inner abutment.

9. In a storm window, a panel-receiving frame, an upper panel secured in the upper portion of said frame, a lower panel for mounting in the lower portion of said frame in edge-abutting relation with said upper panel, the contiguous edges side of said abutment, a lower panel for mount- 7 ing in the lower portion of said frame in edgeabutting relation with said upper panel, the contiguous edges of said panels having complementary cylindrical surface portions in surface contact, concave on the upper panel and convex on the lower panel, and plane surface portions on the outer edges of said panels in surface contact when said lower panel lies against said abutment, pivot means on said lower panel concentric with said cylindrical surfaces, and cooperating means on the frame for mounting said lower panel therein for inward pivotal movement about its upper end while maintaining surface contact with said upper panel at said cylindrical surfaces.

11. In a storm window, a panel-receiving frame, an outer abutment at the outside edge of said frame,-an upper panel removably secured in the upper portion of the frame against the inside of said abutment, a lower panel for mounting in the lower portion of said frame in edge-abuting relation with aid upper panel, the contiguous edges of said panel having complementary cylindrical surface portions in surface contact, concave on the upper panel and convex on the lower panel, a pair of pintles mounted in the top rail of said lower panel concentric with said cylindrical surface and movable between retracted and projected positions, latch means for holding said pintles in said retracted and projected positions, and apertures in said frame for receiving said pintles when projected for holding said lower panel in the frame, said pintles supoorting the panel for pivotal movement about its upper end while maintaining surface contact with said upper panel at said cylindrical surfaces.

12. In a storm window, a panel-receiving frame, an upper panel mounted in the frame; a lower panel mounted in the frame in edge-abuting relation with said upper panel; a raised ledge at the base of the frame for engaging the lower edge of said lower panel, the lower panel being swingable about its upper end, inwardly from said frame; a latch bar mounted on the base of the frame inwardly from, and below the level of said ledge, said latch bar being horizontally, pivotally mounted and tiltably movable about one end thereof, and lying fiat against the inside of said ledge in one position and being movable to a position projecting inward and upward from said ledge; and latch means mounted on the lower panel for cooperation with said latch bar when the latter is moved to projected position, for holding the lower panel in inwardly tilted position about its pivotal mounting.

13. In a storm window, a panel-receiving frame, an upper panel mounted in the frame; a lower panel mounted in the frame in edge-abutting relation with said upper panel; a raised ledge at the base of the frame for engaging the lower edge of said lower panel, the latter panel being mounted for pivotal movement about its upper end, inwardly from the frame; an apertured horizontal ledge on the frame below the level of the first named ledge, and located inwardly thereof; a latch bar having a pin projecting at right angles thereto at one end thereof, said pin being loosely held in the aperture in the lower ledge of said frame and providin horizontal pivotal movement as well as tiltin movement of said latch bar about the pin at one end thereof; and latch means mounted at the lower end of said lower panel for engaging said latch bar when the latter is moved to a projected position for holding the panel in inwardly tilted position about its pivotal mounting.

14. In a storm window, a panel-receiving frame, an upper panel mounted in the frame, a lower panel mounted in the frame in edge-abutting relation with said upper panel; a raised ledge at the base of the frame for engaging the lower edge of said lower panel, the lower panel being pivotally swingable about its upper end, inwardly from the frame; a latch bar mounted on the base of the frame inwardly from and below the level of said ledge, said latch bar being swingable in a horizontal plane as well as tiltable about one end thereof, said bar lying fiat against the inside of said ledge in one position and being movable to a position projecting inward and upward from said ledge; and a latch member on the lower panel comprising a pair of resilient vertically spaced horizontal clamp members open at one side for receiving and clamping said latch bar between them when the bar is moved to pro, jecting position, said latch member being movable on said panel between a downwardly pro- .iecting position to engage said latch bar, and an upwardly retracted position when disengaged therefrom.

15. In a storm window a panel-receiving frame, an upper panel mounted in said frame, a

lower panel pivotally mounted at its upper edge in the frame for inward pivotal movement, said panel having an upper surface in edge-abutting relation with said upper panel in all pivoted posi tions, and releasable latch means at the lower part of said lower panel and on the lower part of said frame for holding the lower panel in inwardly pivoted position, said latch means including a latch bar having a plurality of notches for supporting the lower panel in various angles of inclination.

16. In a storm window, a panel-receiving frame, an upper panel mounted in the frame; a lower panel mounted in the frame in edge-abutting relation with said upper panel; the lower panel being swingable about its upper end, inwardly from said frame; a latch bar mounted on the base of the frame, said latch bar being horizontally swingable as well as tiltable about one end thereof, and lying fiat in one position and being movable to a position projecting inward and upward; and latch means mounted on the lower panel for cooperation with said latch bar when the latter is moved to projected position, for holding the lower panel in inwardly tilted position about its pivotal mounting.

ALFRED B. EDWARDS, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 113,759 Gifford Apr. 18, 1871 839,640 Ralph Dec. 25, 1906' 1,139,008 Abraham May 11, 1915 1,562,576 Milbrath Nov. 24, 1925 2,317,688 Kuyper Apr. 27, 1943 2,397,807 Rick Apr. 2, 1946 

